TM 5-4310-393-14WELL VENTILATED AREA AWAY FROM OPEN FLAME, ARCING EQUIPMENT,IGNITION SOURCES, HEATERS, OR EXCESSIVE HEAT. ENGINE MUST BE SHUTDOWN AND COOL BEFORE REFUELING. ALWAYS STORE FUEL IN PROPER,MARKED CONTAINERS. DO NOT SMOKE.WARNINGDEATH OR SERIOUS INJURY COULD OCCUR IF COMPRESSED AIR IS DIRECTEDAGAINST THE SKIN. DO NOT USE COMPRESSED AIR FOR CLEANING ORDRYING UNLESS THE PRESSURE HAS BEEN REDUCED TO 30 PSI (2.06 BAR) ORLESS. WHEN WORKING WITH COMPRESSED AIR ALWAYS USE CHIP GUARDS,EYE PROTECTION, AND OTHER PERSONAL EQUIPMENT.a.Remove slight ridges, score marks, and glaze with hone brush, equipped with 20-grit stones. Workhone up and down rapidly the full length of the cylinder bore several times in a crisscross pattern. Criss-cross patternproduces hone marks on a 45-degree axis, which aid piston movement and helps prevent formation of ridges.b.Clean cylinder with dry cleaning solvent and dry with low pressure compressed air. Remove anyburrs.c.Recheck cylinder bore and out of round on repaired cylinder as described above. Replace if out oftolerance. Refer to Table 5-3.d.Apply a bead of silicone sealant at the base of the finned section of the cylinder to seal the jointbetween the cylinder and the crankcase.e.Install piston in accordance with paragraph 5-6.6. Apply engine lubricating oil to piston rings.f.Ensure piston ring gaps are out of alignment by 120 degrees.CAUTIONWhen installing cylinder, make sure piston or connecting rod does not knockagainst crankcase. This could result in serious damage to the piston orconnecting rod. Use care when installing cylinder to prevent damage to pistonrings.g.Compress piston rings with piston ring clamp (Figure 5-38, Item 2).h.Apply lubricating oil to inside of cylinder and slowly mount cylinder on studs (4). Remove piston ringclamp (2).5-30
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